The invention relates to a CTP synthesis technology of rubber scorch retarder and a device thereof. The technology comprises the following steps of: continuously adding cyclohexyl sulfenyl chloride and phthalimide sodium salt into a tube type reactor, continually adding with nitrogen, momentary completely mixing the cyclohexyl sulfenyl chloride and the phthalimide sodium salt at the tube type reactor and reacting, adding materials into a condensation kettle, and continuously stirring to have a condensation reaction under consistent temperature. The invention also provides a special tube type reactor. By adding a pipeline condensation reaction, the invention can reduce the decomposition probability of the cyclohexyl sulfenyl chloride, thereby heightening yield efficiency to be more than 92% and purity to be more than 98%.